Gymnasium insert for a playpen



FIG. 1 is a perspective view of a gymnasium insert for a playpen showingmy new design;

FIG. 2 is an end elevational view thereof, the opposite end being amirror image thereof;

FIG. 3 is a side elevational view thereof, the opposite side being amirror image thereof; and,

FIG. 4 is a top plan view thereof.

The broken line showing of a playpen in FIG. 1 is for illustrativepurposes only and forms no part of the claimed design.

The ornamental design for a gymnasium insert for a playpen, as shown anddescribed.